Portion of a LED lamp



FIG. 1 is a front view of an portion of a LED lamp, showing my new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is bottom perspective view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken line showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for an portion of a LED lamp, as shown and described. 